Modifying attachment for sound-reproducing machines



PQE. YEAGE R. MODIFYING ATTACHMENT FOR SOUND HEPRODUCING MACHINES. APPLICATION FILED APR. 2. I920.'

1,377,652. Patented y 10, 1921.

UNITED STATES PATENT OFFICE- PETER IE. YEAGER, OF READING, PENNSYLVANIA.

MODIFYDTG ATTACHMENT FOB. SOUND-REPRODUCING MACHINES.

To all whom it may concern:

Be it known that I, PETER E. YEAGER, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Modifying Attachments for Sound-Reproducing Machines, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to certain improvements in modifying attachments for sound reproducing machines, and it is an object of the invention to provide a novel and improved device of this generalcharaeter especially designed and adapted for use in connection with the stylus arm or lever of i a sound box whereby the sounds reproduced a provide a novel and improved attachment by the machine are, substantially free of scratching or other foreign noises which are often present in the sounds produced by the machinesnow generally in use.

Another object of the invention is to provide a novel and improved attachment of this general character which operates to materially increase the quality andtone of the sounds reproduced, and which also operates to lower the pitch or tone of such sounds so that the tone is full, resonant and natural, and whereby the tones or sounds are reproduced with fidelity.

'It is also an object of the invention to of this general character comprising-a chamber provided with means therein operating to substantially eliminate foreign vibrations such as scratching or the like so that the tones produced within the sound box are substantially an exactireproduction of the original. i

The invention consists in the details of construction andin the combination and arrangement. of the several parts of my improved attachment whereby certain important advantages are'attained and the .device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel featuresofmy invention will hereinafter be definitely claimed.

In order that my invention may be the better understood, I will now proceed to tie Specification of Letters Patent.

, or pin removed.

elevation illustrating a sound box having coacting therewith attachments constructed and applied in accordance with an-embodiment of my invention;

7 Patented May 10, 1921.

Application filed April 2, 1920. Serial No. 370,788.

Fig. 2 is a'view in side elevation of the 1 structure as illustrated in Fig. 1; i

Fig. 3 is an enlarged fragmentary view partly in section and partly in elevation illustrating certain details of construction 7 of one of my improved attachments; and

Fig. 4 is a view in bottom plan of the structure illustrated in Fig. 3 with the stylus As disclosed in the accompanying drawings, 3- denotes a soundbox of any ordinary or preferred type and which has operatively engaged with the diaphragm 1 a stylus arm or lever A. As herein embodied, the stylus arm A comprises two sections 2 and 3 having interposed therebetween an attachment B constructed in accordance with an embodiment ofmy invention, and which attachment also connects the adjacent end portions of the sections 2 and 3. The lower or outer end portion of the section 3 of the stylus arm or lever A is provided with a socket A which ordinarily receives a conventional type of stylus or pin, but, which, in the present embodiment ofmy invention, is adapted to afford means whereby a second attachment B,- constructed in accordance with an embodiment of my invention, maybe operatively connected with the stylus arm or lever A. v w

As herein disclosed, the attachments B and B are of similar construction, and each of said attachments comprises a shell 5 having a central portion provided with a substantially spherical chamber 6 of desired radius and with its opposite end portions provided with the longitudinally alined open said sections are assembled, the opposed edges or ls are a a ted, to be adhesively connected, 7

Each of the sections of the shell is provided at one end portion at opposite sides of the opening 7 with the grooves 9 arranged in parallelism and in which are seated the opposite end portions of a cluster of elongated wire strands 10 of soft metal. The strands 10 are extremely line and the end portions 10* thereof seating within the grooves 9 are preferably twisted or wrapped together, and said portions 10 are preferably held against displacement within the grooves 9 by glue or other suitable adhesive. The portions of the strands 10 intermediate the wrapped or twisted portions 10 are disconnected or free one from the remainder, and after the portions 10 have been properly engaged within the grooves 9, said free intermediate portions of the strands are spread or separated within the section of the chamber 6 and substantially in close contact with the wall of said chamber. After the strands 10 have been properly arranged Within each section of the shell 5, said sections are then assembled.

It is also preferred in practice that initially the opposite ends of the sections of the shell 5 be solid, and after the sections .have been assembled the openings 7 are bored therethrough by a suitable tool. After the openings 7 have been formed, it is preferred that a solid plug or filler of hard wood be snugly engaged therein, and then bored out to provide the sleeve or bushing 8. It is also preferred that each of the bushings or sleeves 8 be positively retained within an opening 7 by a suitable adhesive, as by this means the maintenance of the sections of the shell 5 assembled is materially facilitated. I c

The upper opening 7 of the attachment B is adapted to have snugly engaged therein the outer end portion of the section 2 of the stylus arm or lever A, while the opposite or lower opening 7 is adapted to have snugly engaged therein the adjacent end portion of the section 3 of said stylus arm of lever A. To further facilitate the positive connection between the section 3 and the attachment B, the lower part of the attachment B has disposed therearound a ferrule or band 11 preferably of soft metal and threaded through said band 11 and the adjacent wall of the shell 5 is a binding screw '12 which is adapted to have requisite gripping contact with the section 3. I

The lower or outer end portion of the attachment B is also surrounded by a band or ferrule V 11 preferably of soft metal, through which is disposed the binding screw 14 which also extends through the adjacent wall of the'shell 5 and is adapted to have "binding action on the end portion of the needle or stylus 15 inserted within the lower portion 7. The upper or inner opening 7 of the attachment B is adapted to have snugly engaged therein an end portion of a coupling rod 16 of soft metal, and the op posite end portion of said rod 16 is adapted to extend within the socket 4 of the section 3 and held therein by the binding screw 17 threaded through a wall of the section 3 and having binding action on the pin 16.

It is also preferred that the section 3 of the arm or lever 9 have the requisite pivotal connection, as at 18, with the sound box S, as is clearly illustrated in Figs. 1 and 2 of the accompanying drawings.

While I disclose in the accompanying drawings the use of two attachments B and B, it is to beunderstood that either one of said attachments can be omitted, and in the event the attachment B is not used, the stylus arm or lever will be of any one of the types now in use or. which may be employed. It has been established in practice that theuse of one attachment is of decided advantage, and when only a single attachment is preferred, itis desired that the same be positioned and arranged as illustrated in the accompanying drawings with respect to the attachment B.

With the use of my improved attachment are accomplished and facilitated by the.

strands 10 as the clarifying of the tones is effected by the supplemental vibrations of such strands.

From the foregoing description it is thought to be obvious that an attachment constructed in accordance with my invention is particularly well adapted for u'seby reason of the convenience and facility with which it may be-assembled and operated, and it will also be obvious that my'invention is susceptible of some change and modification without departing from the principles and spirit thereof, and for this reason 'I do not wish to be understood as limiting myself to the precise arrangement and for- 'mation of the several partsuherein shown in carrying out my invention in except as hereinafter claimed.

I claim 1. Asa new article of manufacture, a sound modifying attachment for use inconpractice nection with the stylusarm of a sound reproducing machine comprising a shell having a chamber intermediate its ends, openings in its opposite ends, and a vibratory medium arranged within the chamber and substantially in contact with the wall of the chamber.

2. As a new article of manufacture, a sound modifying attachment for use in connection with the stylus arm of a sound reproducing machine comprising a shell having a chamber intermediate its ends, and openings in its opposite ends, and a vibratory medium arranged within the chamber, said vibratory medium comprising a plurality of metallic strands extending within the chamber, the portions of the strands within the chamber being separated.

3. As a new article of manufacture, a sound modifying attachment for use in connection with the stylus arm of a sound reproducing machine comprising a shell having a chamber intermediate its ends, open- I ings in its opposite ends, and a vibratory medium arranged within the chamber, said vibratory medium comprising a plurality of metallic strands extending within the chamber, the portions of the strands within 7 signature.

PETER E. YEAGER. 

